Listen to A2DP profile connection instead of device connection.

Change-Id: I583de3b615c2b6d3b9cc72fbbec52ceead1e07bf
Merge "Listen to A2DP profile connection instead of device connection." into cm-10.2
Merge branch 'cm-10.2' of git://github.com/CyanogenMod/android_packages_apps_DSPManager into cm-10.2